Water heater and purifier.



J. E. WOOD. WATER HEATER AND PURIFIER.

APPLICATION, FILED NOV. 22, 1909.

Patented Mar. 14, 1911.

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JOHN EDWARD WOOD, OF NOTTINGHAM, ENGLAND.

WATER HEATER AND PURIFIER.

Specification of Letters Patent.

Patented Mar. 14, 1911.

Application filed November 22, 1909. Serial No. 529,427.

To all whom it may concern:

Be it known that I, J OHN EDWARD lVoon, a subject of the King of Great Britain, and resident of the city of Nottingham, in the county of the said city, England, have in vented new and useful Improvements in lVater I-Ieaters and Purifiers, of which the following is a specification.

This invention relates to improvements in apparatus used for heating and purifying the feed water fed to steam generators and in, or by, which the feed water is heated by contact with the live steam of the generator, the object of the present invention being the production of a feed water heater and purifier which has a large heating or evaporating surface in a comparatively small space, over which surface the water has an uninterrupted flow, the said improved apparatus being applicable for use in connection with tubular boilers of the locomotive type, vertical boilers, and other boilers which have a small steam space.

In the accompanying drawings :EFigure 1 is a sectional elevation of the improved water heater and purifier, showing also its application to tubular boilers of the locomotive type, and Fig. 2 is a sectional plan 011 the line A, A, Fig. 1.

In the arrangement shown in the drawings there is a cylindrical casing a the lower end of which is attached. to the boiler shell I), over an opening in the same. The upper end of the casing a is closed by a detachable cover 0 and the interior of the chamber formed by the case and its cover is divided by a horizontal plate (Z which has a flanged rim (2 and rests upon the upper edge of the casing, but it may be carried by brackets or other supports from the inside of the casing. The plate (Z is provided with a number of openings 7 so that the steam from the boiler can circulate freely in the space above the plate.

Attached to the underside of the plate (Z there is a settling tank 9 which has an outlet opening 7L near its upper end and an inlet pipe 2' which is attached to the underside of the plate d and projects into the tank 9. The feed water pipe 7', which is connected to a feed pump, injector or the like, passes through the tank 9 and above the plate (Z is provided with a deflecting cowl k. The blow ofl" pipe Z also extends through the settling tank and is provided with outlet openings at while the lower end of this pipe is taken through some convenient part of the boiler shell and fitted with a valve which is opened, when required, to allow of the sediment in the tank being blown out. The pipes and Z are provided with joint making collars n and t respectively and the joints between these collars and the bottom of the tank are made by nuts 0 and a above the plate d, this arrangement being adopted to facilitate the removal and replacement of the plate (Z and its attached parts.

Surrounding the outside of the tank g, and connected thereto, there is a continuous helical evaporating and heating tray r which is made with an outside rim 8 so that the water delivered to the top of the tray through the opening /t is compelled to llow over the full length of the tray before it mixes with the water in the boiler, and at the lower end of the tray there is, or may be, a chute or spout o by which the water on the tray is directed into the water in the boiler.

I11 a modification of the arrangement shown the casing a is made with a closed bottom and it is connected to the boiler with a pipe for the admission of steam and a pipe by which the water delivered to the apparatus can llow into the boiler.

The improved apparatus may be provided with a covering of a non-conductor of heat to prevent radiation and when used in connection with boilers of the locomotive type the whole apparatus may be incloscd in a dome 'w as shown in the drawings.

The size of the apparatus and the area of the QVill'JOl'fltlIlg surface are varied according to the size and particular requirement of the boiler to which the apparatus is applied, and while the shape of the apparatus, in plan, may be varied it is preferably circular or of some other continuous curve.

The evaporating tray may be cast with the settling tank or the tray may be in sections attached to the outside of the tank and the surface of the tray may be plain or corrugated.

\Vith an apparatus constructed as herein described the feed water is forced into the boiler through the pipe y' and this water is broken up into the form of a spray by coming into contact with the cowl 7c. The particles of water are thus brought into intimate contact with the live steam as they fall on to the steam heated tray d and from this tray the water passes down the pipe 2' into the water in the settling tank 9 and a large proportion of the impurities in the Water fed to the boilers settle at the bottom of the tank. The water flows from the tank 9 by the outlet it on to the upper end of the helical tray 1 and is again exposed to the action of the steam. This raises the water to a high temperature whereby it is further purified before being delivered into the water in the boiler.

I claim 1. In a water heater and purifier the combination of a water inlet pipe, a cowl for breaking up the feed water, a tray on to which the water Ialls, a settling tank, an inlet from the tray directly into the tank, and a helical evaporating tray surrounding such tank and an outlet from the tank to the tray substantially as herein described.

2. in a water heater and purifier, the combination of an outer casing, a dividing tray in such casing, a settling tank within the casing below the dividing tray, a water in let to the settling tank leading from the said tray, a helical evaporating tray surrounding the settling tank, an-outlet from the tank leading from the upper part thereof to the helical evaporating tray, and a blow-0H pipe for the settling tank.

3. In a water heater and purifier the combination of an outer casing, a detachable cover to such casing, a dividing tray in the casing, a settling tank, a feed water pipe, a blow off pipe, detachable connections between the pipes, tray, and tank, and a helical evaporating tray surrounding the settling tank the dividing tray,

and helical evaporating tray, being removable from the outer casing when the cover is removed and the detachable connections loosened substantially as herein described.

4. In a water heater and purifier, the combination of an outer casing, an inlet pipe, a cowl opposite the end of the pipe for breaking into spray the feed water, a tray below the cowl on which the water is collected, a settling tank below the tray arranged to receive the water therefrom, and a helical evaporating tray surrounding the tank and secured thereto arranged to receive the overflow from the tank, substantially as set forth.

JOHN EDWABD lVOOD. Witnesses VILLIAM H. POTTER, HARRY Borne.

Copies of this patent may be obtained for Washington, D. u.

five cents each, by a leessing the Commissioner of Patents,

and the settling tank 

